| (19) |
 |
|
(11) |
EP 0 294 965 A3 |
| (12) |
EUROPEAN PATENT APPLICATION |
| (88) |
Date of publication A3: |
|
11.10.1989 Bulletin 1989/41 |
| (43) |
Date of publication A2: |
|
14.12.1988 Bulletin 1988/50 |
| (22) |
Date of filing: 23.05.1988 |
|
|
| (84) |
Designated Contracting States: |
|
BE DE ES FR GB IT NL |
| (30) |
Priority: |
12.06.1987 US 61855
|
| (71) |
Applicant: UNIROYAL CHEMICAL COMPANY, Inc. |
|
Middlebury
Connecticut 06749 (US) |
|
| (72) |
Inventors: |
|
- Abruscato, Gerald John
Hartford
Connecticut 06051 (US)
- Jancis, Elmar Harry
New Haven
Connecticut 06770 (US)
- Stott, Paul Edwin
Fairfield
Connecticut 06842 (US)
|
| (74) |
Representative: Browne, Robin Forsythe, Dr. et al |
|
Urquhart-Dykes & Lord
Tower House
Merrion Way
Leeds LS2 8PA
West Yorkshire
Leeds LS2 8PA
West Yorkshire (GB) |
|
| |
|
| (54) |
Stabilized vinyl aromatic composition |
(57) A vinyl aromatic composition stabilized against polymerization comprising (a) a vinyl
aromatic compound and (b) an effective amount of a stabilizer system in which the
active ingredient consists essentially of an oxygenated species formed by the reaction
of oxygen and an N-aryl-N′-alkyl-p-phenylenediamine. Also disclosed is a process for
inhibiting the polymerization of vinyl aromatic compounds employing such an oxygenated
species.